<template>
  <div>
    <h1>事件对象</h1>
    <button @click="handleClick">点击</button>
    <h1>数字：{{ count }}</h1>
    <button @click="add">加1+</button>
    <button @click="dd">减1-</button>
  </div>
</template>

<script setup>
import { ref } from "vue";
const count = ref(0);
const add = (event) => {
  count.value++;
  if (count.value % 2 === 0) {
    event.target.style.backgroundColor = "red";
  } else {
    event.target.style.backgroundColor = "blue";
  }
};
const dd = () => {
  count.value--;
};
const handleClick = (event) => {
  console.log(event);
};
</script>

<style>
button {
  width: 100px;
  height: 50px;
  background-color: rgb(0, 221, 255);
}
</style>
